N. N. Kolos, V. Orlov, E. Y. Yuzefovskaya
Jul 1, 1995
Citations
0
Influential Citations
7
Citations
Journal
Chemistry of Heterocyclic Compounds
Abstract
The reaction of 4-nitro-o-phenylenediamine with 4-nitro-4′-R-chalcone dibromides affords the corresponding β-(2-amino-4-nitroanilino)chalcones; x-ray diffraction data indicate that these are the Z-isomers. Experiments have been perfortned to determine the conditions required for cyclization of these compounds into 2, 4-diaryl7(8)-nitro-1, 5-benzodiazepines. In the solid phase or in ethanol solutions, these latter compounds exist primarily in the 3H tautomeric form; but in DMSO solutions, the 1H form predominates.